@inproceedings{lehmann2013networked,
  title={Networked user engagement},
  author={Lehmann, Janette and Lalmas, Mounia and Baeza-Yates, Ricardo and Yom-Tov, Elad},
  booktitle={Proceedings of the 1st workshop on User engagement optimization},
  pages={7--10},
  year={2013},
  organization={ACM}
}